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An Example
183
5
Endstation B sends an NHRP packet with its own details back to
endstation A. This packet, however, is sent directly through the Switch
units and not through the routing device. To do this, endstation B
specifies that:
■
The packet is sent to the VLANs that endstation A can receive.
■
The packet has the destination MAC address of endstation A.
6
Endstation A receives the NHRP packet from the endstation B and records
the MAC address and VLAN membership of endstation B.
7
Endstation A sends the data packet to endstation B directly through the
Switch units. To do this, endstation A specifies that:
■
The packet is sent to the VLANs that endstation B can receive.
■
The packet has the destination MAC address of the endstation B.
An Example
Figure 38
(overleaf) shows a network containing two endstations, three
Switch units and a routing device. Endstation A is in VLAN 1, and
endstation B is in VLAN 2. In this setup, FastIP is not enabled and if
endstation A sends data packets to endstation B they must pass through
the routing device.
If FastIP is enabled on the Switch units and endstations:
1
Endstation A sends an NHRP packet to endstation B through Switch A,
Switch C, the routing device, Switch C, and Switch B. This is shown in
Figure 39
.
2
When endstation B receives the NHRP packet from endstation A, it sends
its own NHRP packet to endstation A through Switch B, Switch C and
Switch A. This is shown in
Figure 40
.
3
When endstation A receives the NHRP packet from endstation B, it sends
data packets to endstation B through Switch A, Switch C and Switch B —
without passing through the routing device. This is shown in
Figure 41
.
Summary of Contents for SuperStack II
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Page 42: ......
Page 154: ...154 CHAPTER 4 WORKING WITH THE COMMAND LINE INTERFACE ...
Page 156: ......
Page 162: ...162 CHAPTER 5 PORT TRUNKS ...
Page 169: ...VLANs and Your Switch 169 Figure 32 Forwarding unknown 802 1Q tags ...
Page 173: ...VLAN Configuration for Beginners 173 Figure 34 Simple example Untagged connections using hubs ...
Page 180: ...180 CHAPTER 6 VIRTUAL LANS VLANS ...
Page 188: ...188 CHAPTER 7 FASTIP ...
Page 200: ...200 CHAPTER 9 SPANNING TREE PROTOCOL Figure 49 STP configurations ...
Page 210: ...210 CHAPTER 10 RMON ...
Page 211: ...IV PROBLEM SOLVING Chapter 11 Problem Solving ...
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Page 224: ...224 CHAPTER 11 PROBLEM SOLVING ...
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